Effects of Elevated Root-Zone CO₂ on Root Morphology and Nitrogen Metabolism Revealed by Physiological and Transcriptome Analysis in Oriental Melon Seedling Roots.

ABSTRACT: Rhizosphere CO₂ is vital for crop growth, development, and productivity. However, the mechanisms of plants' responses to root-zone CO₂ are unclear. Oriental melons are sensitive to root-zone gas, often encountering high root-zone CO₂ during cultivation. We investigated root growth and nitrogen metabolism in oriental melons under T1 (0.5%) and T2 (1.0%) root-zone CO₂ concentrations using physiology and comparative transcriptome analysis. T1 and T2 increased root vigor and the nitrogen content in the short term. With increased treatment time and CO₂ concentration, root inhibition increased, characterized by decreased root absorption, incomplete root cell structure, accelerated starch accumulation and hydrolysis, and cell aging. We identi

SUBMITTER: Chen X 

PROVIDER: S-EPMC7037942 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature